Hi,
I don't think these are documented. I usually try to figure these out by trial-and-error. The error log is quite helpful (for a change!). If you go to the line number in the error, you will _usually_ find the error.
A note of caution though: you will want to always edit in Notepad (or any other "raw" text editor) because other programs tend to add some additional formatting characters (line breaks, etc.) which the CBL compiler doesn't like. Even if you use Excel, you will want to open the final "text" into Notepad and use it from there to remove any such characters.
-Khalid